Insole.



, which I shall hereinafter take up, is one citizen of the UnitedStates,

5 Ill 'isa ALDEN s. Borne,

. InsoLn To all whom it may. concern.

Be it known that I, ALDEN S. BOYER, a and resident of Chicago, "in thecounty of Cook and State of inois, have invented a certain new anduseful Improvement. in Insoles, of which the following is a full, clear,concise, and exact description, reference being had to the accompanyingdrawings, forminga part of t is specification. My invention relates toinsoles to be worn as auxiliary linings in boots and shoes and hasforits object provision of an insole suitably medicated to relieveexcessive perspiration of the feet and to toughen the same.

Broadly, the distinctive feature of my invention lies in the fact that amedicinal agent is applied to an insole of felt or other suitablematerial. The medicinal agent,

which, when it comes in contact with the perspiration, sets freenascent'oxygenwhich deodorizer. s I sometimes find it desirable to cutthe edges of an insole of this kind to make it fit a shoe smaller insize than the size shoe for which the insole was originally intended.

portion thereof; and Fig. 3 is a To facilitate the cutting I providelines upon the insole of my invention to indicate the various sizes. Thelines may or may not be marked to show what size is had by cutting along'a certain line." I have not thought it necessary to mark the lines onthe, drawing accompanying this application.

My. invention will be more clearly understood by referring to theaccompanying invention} Fig; 2 is an enlarged section of across-sectional view of a portion of a modified form of insole.

In preparing my insole I prefer to usewhite felt, although it is obviousthat other materials might be substituted for the felt without departingfrom the spirit of my invention I prefer to treat the felt insole in-(heated at A in 1, with a mixture of zinc peroxid and perhorate of soda.E ther ofthese chemicals may be used alone with good results.

. plied to both sides of the felt and the removed with a roller.

is an excess The interstices between the fibers of the felt are filledwith the. mixture referred to "as indicated at B in The medicinal agentSpecifica tion of Letters Patent.-

to th perborate of soda,

' acid of zinc peroxid zinc .ahlgi material impre%ted with zinc peroxiPatented re 22, 1915.

Application filed June 12, 1912. Serial No. 703,107.

Figs. 2 and 3. After the insole has been treated with the medicinalagent, I prefer to apply a mixture-of glue and shellac to one side ofthe insole. The glue and shellac serve to stiffen the insole, to cementthe same e-shoe, and to retain the zinc peroxid, or the mixture of thesetwo, in the interstices of thefelt. I sometimes add the glue and shellacto the zinc per-oxid, perborate of soda, or the mixture of thiese twobefore they are applied to the in so e.

As is well known, the perspiration of the human body contains aconsiderable proportion of uric acid. When the uric acid of theperspiration comes into contact with the zinc peroxid, it reacts withthe same to form oxid of zinc and to set free nascent oxygen. As I havesaid before, the nascent oxygen acts as a deodorizer.- he Zinc oxidwhich remains is a healing agent which is very beneficial in cases wherethe'feet are afllicted with corns, bunions, chafing or the like. In alike manner the perborate of soda reacts with the uric to set freeoxygen and form borax. In Fig. 3 I have shown a section of a portion ofan insole provided with a backing C of suitable stifi ening material,such as hair cloth or the like; I find, however, that this backing isnot absolutely neces sary as the mixture filling theinterstices of thematerial together with the glue and shellac serve to impart thenecessary'stiffmess to the same. At D in Fig. l I have v shown lines tofacilitate cutting a smaller size insole from an insole of larger size.

shoe.

It is difficult if notimpdssible to give the J actual chemical reactionswhich take place when the acids of the perspiration come into contactwith the zincperoxid or sodium perborate with which thefinsole istreated. One thing is certain, however, in either case nascent oxygen isreleased, and in the\case oxid is left as .a result of the reaction'orreactions which occur.

.:What I claim and desire to secure by Letters Patent is: f 1 .1. insolecomprising a piece of suitshellac filling the interstices 4. An insoleof suitable material imprege of felt,

:2. An insole comprising a piece of the nated with a medicinal agentadapted to' react with the uric acid of the perspiration to set free. adeodorizing agent.

5. An insole of suitable material impregnated with a medicinal agentadapted to react with the uric acid of the perspiration to form ahealing agent and to set free a deodorizing agent.

6. Aninsole of suitable material impregnated with a medicinal agentadapted to react with the perspiration to set free oxygen. v 7. Aninsole comprising a agent adapted to react with the perspiration to forma healing agent. a

In witness whereof, I hereunto subscribe my name this 5th day of June,A. D., 1912.

ALDEN s. BOYER.

Witnesses: ALBERT G. MGCABB, ALBIN O. A LBERG.

piece hf suit. able material impregnated with a medicinal

